Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 85
Fig. 77. Interpole Device to PreventSparking 68 PRINCIPLES 59 with the armature winding, and so arranged that it produces a mag-netic force directly opposed to that of the armature, thus opposing … Fig. 78. Compensating Winding to Prevent Sparking its demagnetizing and distorting effects; in this design the brush isout of the neutral position, either leading or lagging somewhat, ac-cording as the machine is acting as a generator or motor and doesnot allow of reversibility of rotation without…
Electrical engineering
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